Abstract:With the development of smart construction technology, design companies' implementation of smart design has attracted much attention. Studying the management platform that meets the design management needs of design enterprises, solving the data security problems in design management of design enterprises, and improving the design data security of architectural design enterprises is the only way for design enterprises to complete the transformation and upgrade. The data management in the design phase is a part of the data management of the whole life cycle of the construction project. By analyzing and researching the current situation of 3D collaborative design and building data management, it is inconvenient to review the 3D model annotations, diversify the building data format, and data security Low-level problems, using DLP methods, digital watermarking technology, data coding and other computer technologies to build a design management platform that filters out malicious information collected during the design process; prevents data loss and theft during data processing; Through the tracing of data sources, disputes between enterprises have been resolved. Finally, the construction and application of this platform are researched and analyzed, and a model path for universal application is proposed.